—I’m sorry to have kept you ______ for such a long time.—It doesn’t matter.A. wait B. waiting C. to wait
My classmates plays ________ computer games at the weekends.
—Is there _______ juice in the glass?—Yes, there is_______.
_____your friend from the USA ? No, he’s an English boy.
— Do you know who teaches ______ Chinese? — Yes . Mr Wang does.
The girl often plays _______ piano in her bedroom.